Self-driven micron motor for fluorescence detection of explosives and synthesis and use method thereof
A micro-motor and fluorescence detection technology, applied in the application field of China, can solve the problem that catalysts are rarely reported, and achieve the effects of small size, shortening operation time, and speeding up the mass transfer process.
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Embodiment 1
[0045] (1) TFPPy (15.0mg, 0.024mmol), o-dichlorobenzene (2mL), hydrazine hydrate (1.94μL, 0.06mmol) and 0.2mL acetic acid (6M) were added to a 10mL reactor, and the mixture was sonicated for 2min, Degas through three cycles, seal under vacuum, and heat at 120 °C for 7 days. A mixed product was obtained.
[0046] (2) The mixed product was cooled to room temperature, and after centrifugation, a light yellow precipitate was collected.
[0047] (3) The light yellow precipitate was washed several times with a THF and CHCl3 mixed solution (volume ratio 1:1), and vacuum-dried at 120 °C for 12 h to obtain a light yellow powder, which was the desired covalent organic structure COF.
[0048] like image 3 Shown is the schematic diagram of the COF prepared in Example 1.
Embodiment 2
[0050] (1) Dissolve 0.181g MnSO4·H2O and 0.378g K2S2O8 in 70mL deionized water. After stirring for 10 min, 2 mL of H2SO4 (98%) was added drop by drop to the solution within 30 min of continuous stirring. The solution was then transferred into a 100 mL Teflon-lined stainless steel autoclave and maintained at 110 °C for 18 h.
[0051] (2) After the mixed product was separated, the black precipitate was collected, washed several times with deionized water and ethanol, and dried in air at 60° C. for 24 h. The sea urchin-like MnO2 microspheres were obtained.
[0052] The sea urchin-shaped MnO2 microspheres prepared in Example 2 were tested by scanning electron microscopy (SEM).
[0053] like Figure 4 Shown, the SEM pattern of the different magnifications of the sea urchin shape MnO2 microsphere prepared in embodiment 2.
Embodiment 3
[0055] 4mg MnO2 microspheres, 4mg Fe3O4 nanoparticles, 2mg COF and 100mg PCL were dissolved in 1mL chloroform and mixed thoroughly. This is the oil phase.
[0056] Weigh 0.3g of SDS solid powder and dissolve it in 30mL of deionized water, and mix well. This is the aqueous phase.
[0057] When the water phase was vigorously stirred, the oil phase was quickly poured into the water phase, and the obtained mixed solution was vigorously stirred for 30 min, and then left to stand for 12 h. Get a self-driving COF micromotor. A schematic diagram of the above steps is shown in Figure 5 shown.
[0058] The COF micromotor prepared in Example 3 was photographed with an Olympus microscope.
[0059] like Image 6 , 7 Shown is the photo of the COF micromotor prepared in Example 3. Depend on Image 6 , 7 It can be seen that the COF micro motor is spherical with a diameter of about 20 microns. Image 6 The COF micromotor photographed under bright field, due to the hydrophilicity of...
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